Khrueakham, A., Pongkureekan, S., Phallapang, S., Wannatip, I., & Ponngern, P. (2009). Consumers’ Satisfaction of Nontree E-sarn Drinking Water Produced by Kasetsart University, Chalermphrakiat Sakonnakhon Province Campus. Kasetsart Journal of Social Sciences, 30(1), 48–59. retrieved from https://so04.tci-thaijo.org/index.php/kjss/article/view/246487